<template>
  <div id="cart">
    <!-- 导航 -->
    <nav-bar class="nav-bar">
      <div slot="center">购物车({{length}})</div>
    </nav-bar>

    <!-- 商品的列表 -->
    <scroll class="content" ref="scroll">
      <cart-list></cart-list>
    </scroll>

    <!-- 底部的汇总 -->
    <cart-bottom-bar></cart-bottom-bar>
  </div>
</template>

<script>
  import Scroll from 'components/common/scroll/Scroll' 

  import NavBar from 'components/common/navbar/NavBar'

  import CartList from './childComps/CartList'
  import CartBottomBar from './childComps/CartBottomBar'

  import { mapGetters } from 'vuex'

  export default {
    name: "Cart",
    components: {
      NavBar,
      CartList,
      CartBottomBar,
      Scroll
    }, 
    computed: {
      // 两种语法
      // ...mapGetters(['cartLength', 'cartList'])
      ...mapGetters({
        length: 'cartLength'
      })
    },
    activated() {
      this.$refs.scroll.refresh()
    }
  }
</script>

<style scoped>
  #cart {
    position: relative;
    background-color: #fff;
    height: 100vh;
  }

  .nav-bar {
    background-color: var(--color-tint);
    color: #fff;
    font-weight: 700;
  }

  .content {
    overflow: hidden;

    position: absolute;
    top: 44px;
    /* 89px是mainTabbar的49px加上cartBottonBar高度的40px */
    bottom: 89px;
    left: 0;
    right: 0;
  }
</style>
